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2.73 to 3.42

This is a discussion on 2.73 to 3.42 within the Drivetrain forums, part of the LSx Technical Help Section category; I want to put 3.42s in and use my same 2 series carrier, so is the 7.5 and 7 5/8 ...

  1. #1
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    Pewter
    2001 Z28

    2.73 to 3.42

    I want to put 3.42s in and use my same 2 series carrier, so is the 7.5 and 7 5/8 the same gear or interchangable.

  2. #2
    TunedByFrost supporter rel3rd's Avatar
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    Cranberry Red
    1971 Chevelle SS 402

    Quote Originally Posted by MNZ28 View Post
    I want to put 3.42s in and use my same 2 series carrier, so is the 7.5 and 7 5/8 the same gear or interchangable.
    The same.

    Just need to make sure that the gears ordered are for a 2 series carrier.

    I used some cheapie Summit gears last time I did a gear swap in an F body, and they were surprisingly quiet and easy to setup. For $150 you can't beat them.

    For 3.42 gear ratio and a 2 series carrier, you'd need:

    http://store.summitracing.com/partde...5&autoview=sku

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    2002 Silverado Z71 ECSB HPTuners tuned by yours truly
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  3. #3
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    do you know if the reluctor ring is on the ring gear?

  4. #4
    That guy thearborbarber's Avatar
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    It should either be on the carrier itself or on the axles depending on if you have traction control or not.

  5. #5
    TunedByFrost supporter rel3rd's Avatar
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    Cranberry Red
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    Thumbs up

    Quote Originally Posted by thearborbarber View Post
    It should either be on the carrier itself or on the axles depending on if you have traction control or not.
    100% correct.

  6. #6
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    Thanks for the help guys, I just have one more question I got this part number for a richmond install kit 83-1044-1 and they said it will work for my O1 but it says 82-98.

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